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Larsen & Toubro C*2000 Series, User Manual

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Larsen & Toubro C*2000 Series User Manual Download Page 79

Chapter 6 Control Block Diagram 

 
 
 
 

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Summary of Contents for C*2000 Series

Page 1: ...his manual carefully before installation wiring operating servicing or inspecting this equipment Keep this manual within easy reach for quick reference User Manual Variable Frequency Drive 0 1 11kW 230V 415V ...

Page 2: ...tain conditions Read the message and follow the instructions carefully Identifies shock hazards under certain conditions Particular attention should be directed because dangerous voltage may be present Keep operating instructions handy for quick reference Read this manual carefully to maximize the performance of LTVF Cx2000 series inverter and ensure its safe use WARNING Do not remove the cover wh...

Page 3: ...rter gets damaged Otherwise it could result in fire Do not touch the inverter if it is supplied with electricity or the power is cut off for a few moments Because the inverter is under high temperature status it may cause scald If the inverter is damaged or the part is damaged do not operate the inverter even if the installation is complete Otherwise electric shock could occur Do not allow screw m...

Page 4: ... the inverter under the following environmental conditions Environment Surrounding temperature 10 C 50 C non freezing Relative humidity 90 RH or less non condensing Storage temperature 20 C 65 C Environment Protected from corrosive gas combustible gas oil mist or dust Altitude vibration Max 1 000m above sea level Max 5 9m sec 0 6g or less Atmospheric pressure 70 106 kPa 2 Wiring Do not connect a p...

Page 5: ...er input for frequent starting stopping of the inverter Use a noise filter to reduce the effect of electromagnetic interference Otherwise nearby electronic equipment may be affected In case of input voltage unbalance install AC reactor Power Factor capacitors and generators may become overheated and damaged due to potential high frequency noise transmitted from inverter Parameters will be set to d...

Page 6: ...ing of it 8 General instructions Many of the diagrams and drawings in this instruction manual show the inverter without a circuit breaker a cover or partially open Never run the inverter like this Always place the cover with circuit breakers and follow this instruction manual when operating the inverter ...

Page 7: ...th the inputs and outputs of the inverter 4 Parameter setting Displaying of panel of inverter and operation of key 5 Parameter list Detailed parameters list of inverter 6 Control block diagram Flow chart of control modules 7 Basic function Basic functions including frequency setting operating commands and so on 8 Application function Necessary functions during operation of inverter 9 Monitoring fu...

Page 8: ...mended MCCB 3 2 3 3 Recommendable Fuse Reactors 3 3 CHAPTER 4 Programming Keypad Basic operation 4 1 Keypad structure 4 1 4 2 Alpha numeric table 4 2 4 3 Moving to other parameter groups 4 3 4 4 How to change the codes in a group 4 5 4 5 Parameter setting 4 7 4 6 Monitoring of operation status 4 10 4 7 Frequency Setting and Basic Operation 4 13 CHAPTER 5 Function list CHAPTER 6 CONTROL BLOCK DIAGR...

Page 9: ...6 Frequency setting and 2nd drive method select 8 22 8 17 Over voltage trip prevention deceleration and Power Braking 8 25 8 18 External brake control 8 26 8 19 Kinetic energy buffering 8 27 8 20 DRAW drive 8 27 8 21 2 Phase PWM drive 8 29 8 22 Cooling fan control 8 29 8 23 Operating mode select when cooling fan trip occurs 8 29 8 24 Parameter read write 8 30 8 25 Parameter Initialize Lock 8 30 8 ...

Page 10: ...2 11 4 Operation 11 2 11 5 Communication protocol MODBUS RTU 11 3 11 6 Parameter code list Common area 11 4 11 7 Troubleshooting 11 6 11 8 Miscellaneous ASCII CODE LIST 11 7 CHAPTER 12 Troubleshooting Maintenance 12 1 Protective functions 12 1 12 2 Fault remedy 12 5 12 3 Precautions for maintenance and inspection 12 8 12 4 Check points 12 8 12 5 Part replacements 12 8 CHAPTER 13 Specifications 13 ...

Page 11: ...s 1 Single Phase 2 Three Phase 230V 4 Three Phase 415V Normal Duty Ampere Round Off Values HD Current for 1 Phase VFD B IP 20 Reserved Note 1 If you have found any discrepancy damage etc please contact us refer to the back cover of the Manual Peripheral equipment Be sure of inverter types and select peripheral equipment according to the capacity Installation To operate the inverter with high perfo...

Page 12: ...ter 1 basic information precautions 1 2 Cx2000 AC Drive 1 2 Product Details A Mounting hole B Heat sink C Button cover D Terminal cover E Screw M3 F Front cover G Sheath H Indicator light I Fan J Fan cover ...

Page 13: ...Chapter 1 basic information precautions 1 3 Cx2000 AC Drive A Download interface B PNP NPN select switch C Analog Input V I select D Control terminal E Power supply terminal F Ground terminal ...

Page 14: ... 4 Cx2000 AC Drive 1 3 Product assembling disassembling To remove the front cover Press the both indented sides of the cover lightly and pull up To change the inverter fan Press the both sides of bottom cover lightly and pull out to your side ...

Page 15: ...The installation environment of inverter will influence its service life directly so the inverter shall be used in a condition with standard specification Ambient Temp Checking Location The inverter will be very hot during operation Install it on a non combustible surface far away from hot sources and inflammables Mount the inverter on a flat vertical and level surface Inverter orientation must be...

Page 16: ...ts to insure the inverter is firmly fastened Two or more inverters are installed in a location where ambient temperature is over 30 please refer to temperature derating curve in chapter 13 3 For installing multiple inverters in a panel Proper Installation Improper Installation Caution Take caution on proper heat ventilation when arraning control cabinet to form logical air convection to reduce the...

Page 17: ...ive 2 2 External sizes LTVF C10005BAA LTVF C10008BAA LTVF C20010BAA LTVF C20012BAA LTVF C40005BAA LTVF C40007BAA LTVF C10001BAA LTVF C10002BAA LTVF C10003BAA LTVF C20001BAA LTVF C20002BAA LTVF C20003BAA LTVF C20006BAA LTVF C40002BAA LTVF C40003BAA ...

Page 18: ...Chapter 2 INSTALLATION WIRING 2 4 Cx2000 AC Drive LTVF C20030BAA LTVF C20040BAA LTVF C40016BAA LTVF C40016BAA LTVF C10011BAA LTVF C20018BAA LTVF C40010BAA ...

Page 19: ...TVF C20003BAA 0 4 68 63 5 128 124 5 128 4 2 4 5 4 2 0 8 LTVF C20006BAA 0 75 68 63 5 128 124 5 128 4 2 4 5 4 2 0 8 LTVF C20010BAA 1 5 100 91 128 120 130 4 5 4 5 4 5 1 22 LTVF C20012BAA 2 2 100 91 128 120 145 4 5 4 5 4 5 1 42 LTVF C20018BAA 3 7 140 132 128 120 145 4 5 4 4 5 1 97 LTVF C20030BAA 5 5 160 137 232 216 5 141 5 10 5 5 3 3 LTVF C20040BAA 7 5 160 137 232 216 5 141 5 10 5 5 3 3 LTVF C40002BAA...

Page 20: ...R 10V power supply for potentiometer AI Freq Setting voltage signal input 0 10V Freq setting current signal input 0 20mA CM Input signal common AM Multi function analog out signal 0 10V 3A Multi function relay output terminal A contact output 3B B contact output 3C A B contact common S RS485 communication terminal S SA Safe stop terminal A and SC often closed terminals Inverter displays SAFA when ...

Page 21: ... V W S L2 T L3 N B P2 R L1 S L2 T L3 P2 N U V W 3 Phase AC Input Input rated voltage Power Input terminal DB Resistor DC reactor Motor connec tion terminal Motor B P1 DB resistor DC reactor N Single phase inverter uses terminal R and T for power input 0 1 2 2KW ...

Page 22: ...2 14 2 14 3 5 12 M3 5 10 8 7 LTVF C10008BAA 2 14 2 14 3 5 12 M3 5 10 8 7 LTVF C10011BAA 3 5 12 3 5 12 3 5 12 M4 12 2 10 6 LTVF C20001BAA 2 14 2 14 3 5 12 M3 5 10 8 7 LTVF C20002BAA 2 14 2 14 3 5 12 M3 5 10 8 7 LTVF C20003BAA 2 14 2 14 3 5 12 M3 5 10 8 7 LTVF C20006BAA 2 14 2 14 3 5 12 M3 5 10 8 7 LTVF C20010BAA 2 14 2 14 3 5 12 M3 5 10 8 7 LTVF C20012BAA 2 14 2 14 3 5 12 M3 5 10 8 7 LTVF C20018BAA...

Page 23: ...m 492ft Do not use a 3 wire cable for long distances Due to increased leakage capacitance between wires over current protective feature may operate or equipment connected to the output side may malfunction In case of long wire length it should be required to lower carrier frequency or use Micro Surge Filter 9 DC reactor connects with P1 and P2 terminals if unused short P1 and P2 otherwise the inve...

Page 24: ...ng procedure 1 Remove the front cover 2 Connect the Grounding wire to the ground terminal and secure the screw tightly The grounding point shall be close to the inverter as possible as it can and the grounding wire shall be short as possible as it can Note Grounding work guidance Inverter capacity 230V Drives 415 V Drives Wire size Terminal screw Grounding type Wire size Terminal screw Grounding t...

Page 25: ... 1 5 M2 0 2 Max output voltage 11 V Max output current 10mA S RS485 communication terminal 1 0 1 5 M2 0 2 S RS485 communication terminal 1 0 1 5 M2 0 2 24 External 24V power supply 1 0 1 5 M2 0 2 Max output current 100mA 3A Multi function relay output A 1 0 1 5 M2 6 0 4 AC 250V less than 1A DC 30V less than 1A 3B Multi function relay output B 1 0 1 5 M2 6 0 4 3C Multi function relay common termina...

Page 26: ...ulti function input terminal P1 P5 terminals will be active above 12V level Take caution not to drop the voltage below 12V P1 P5 When using DC 24V inside inverter NPN P1 P5 When using external DC 24V PNP Inside inverter DC 24 V P1 CM CM J3 NPN SW J3 c C M CPU R Inside inverter DC 24 V P1 CM CM J3 DDC24 V PNP SW J3 R R CM CPU R S W J 3 Keypad J3 Switch C ...

Page 27: ...ge source J1 switches to V side connect positive pole of voltage source to terminal AI and negative pole to terminal CM Max external voltage 10V Selecting analog voltage I input using external current source J1 switches to I side connect positive pole of current source to terminal AI and negative to terminal CM Max external current 20mA S W J 3 ...

Page 28: ...tactor optional through electromagnetic contactor Otherwise the operation lifetime of inverter will be shortened Electromagnetic contactor is only installed and used under necessary situations AC and DC reactor optional In order to increase power factor or install large capacity system in the surrounding area of inverter it is necessary to install AC reactor Please select appropriate reactor accor...

Page 29: ...005BAA DM100 25 MNX 9 2P LTVF C10008BAA DM100 30 MNX 12 2P LTVF C10011BAA DM100 50 MNX 18 2P HD ND Three phase 230V LTVF C20001BAA DM16 1 6 DM16 2 5 MO9 LTVF C20002BAA DM16 4 DM16 4 MO9 LTVF C20003BAA DM16 4 DM16 7 5 MO9 LTVF C20006BAA DM16 12 DM16 16 MO9 LTVF C20010BAA DM16 16 DM100 25 MO 12 LTVF C20012BAA DM100 25 DM100 25 MO 18 LTVF C20018BAA DM100 35 DM100 50 MO 32 LTVF C20030BAA DM100 50 DM10...

Page 30: ...TVF C20002BAA 10 A 600 V 1 20 mH 10A 4mH 8 67A LTVF C20003BAA 10 A 600 V 1 20 mH 10A 4mH 8 67A LTVF C20006BAA 10 A 600 V 1 20 mH 10A 4mH 8 67A LTVF C20010BAA 15 A 600 V 0 88 mH 14A 3mH 13 05A LTVF C20012BAA 20 A 600 V 0 56 mH 20A 1 3mH 18 45A LTVF C20018BAA 32 A 600 V 0 39 mH 30A 1 3mH 26 35A LTVF C20030BAA 50 A 600 V 0 30 mH 34A 1 6mH 32A LTVF C20040BAA 63 A 600 V 0 22 mH 45A 1 25mH 43A Three pha...

Page 31: ...et command when fault occurs Up Used to move parameter codes or increase parameter values Down Used to move parameter codes or increase parameter values Left Used to switch parameter groups or move the cursor to the left when the parameters are written Right Used to switch parameter groups or move the cursor to the right when the parameters are written ENT ENT Used to read write and keep the param...

Page 32: ...Chapter 4 Parameter setting 4 2 Cx2000 AC Drive 4 2 Alpha numeric table 0 A K U 1 B L V 2 C M W 3 D N X 4 E O Y 5 F P Z 6 G Q 7 H R 8 I S 9 J T ...

Page 33: ...ters for example set application functions such as PID operation second motor operation and so on I O input output terminal function group Set multi function input output terminals and analog input output parameters Moving to other parameter groups Moving to other parameter groups via the Right key Moving to other parameter groups via the Left key Function group 2 I O group Drive group Function gr...

Page 34: ...O group 4 The 1st input output code I 0 is displayed Press the Right key once to return to Drive group 5 Return to the 1st code 0 00 of Drive group If the Left key is used the above will be executed in the reverse order Moving to other parameter groups from any parameter code other than the 1st code To move from F15 to function group 2 1 F 15 of Function group 1 is displayed Press the Right or Lef...

Page 35: ...e group is displayed Press the Up key again 5 Return to the first code of Drive group Use Down key for the reverse order Code jump method When moving from the F 0 to the F 15 in Function parameter group 1 directly 1 The 1st code F 0 of Function group 1 is displayed Press the ENT key 2 1 is displayed F1 code Use the Up key to set to 8 3 Move the cursor to the left by pressing the Left key and 08 is...

Page 36: ...he same applies to Function group 2 and I O group Some codes will be skipped when the Up or Down is used that is because the codes have not been activated due to no use or some codes intentionally left blank for future use Refer to the Ch 5 for more specific contents For example when F24 High low frequency limit select is set to O No F25 High frequency limit and F26 Low frequency limit are not dis...

Page 37: ...d then the parameter value can be changed Press the Up key 5 The value is increased to 6 0 Press the Left key to move the cursor to the left 6 0 60 is displayed The first 0 in 0 60 is active Press the Up key once 7 16 0 is displayed Press the ENT key 16 0 is blinking 1 Press the ENT key once again to return to the parameter name 8 ACC is displayed Accel time is changed to 16 0 Pressing the Left or...

Page 38: ...p key until 5 is displayed 3 Press the left key once 4 Move the cursor to the left Press the Left key once 5 Press the Left key once 6 Set to 3 using Up key 7 Press the ENT key 30 05 is blinking Press the ENT key 8 Set operation frequency to 30 05 LTVF Cx2000 product displays 4 digits but 5 digits can be displayed and set by using Left key and Right key Under the condition that 30 05 is blinking p...

Page 39: ...d for one digit to the left 4 0 is active 2 is set by pressing the Up 5 Means the current location is for No 28 parameter of Function group 1 Press the ENT key 6 F28 is displayed Press the ENT key 7 Present value of F28 is set to 2 Increase the value to 5 by pressing Up key 8 Press the ENT key 9 Parameter number will appear after 5 is blinking Parameter change is complete Press either Left or Righ...

Page 40: ...rameter of Drive group is displayed Press the Up or Down key until CUr is displayed 2 Monitoring output current code is displayed Press the ENT key 3 Present output current of inverter is 5 A Press the ENT key again 4 Return to the output current monitoring code The same method is used to monitor dCL Inverter DC side voltage or vOL Inverter output voltage of Drive group and so on ...

Page 41: ...cy at the time of fault is displayed Press the Up key once 3 The output current at the time of fault is displayed Press the Up key once 4 Operating status is displayed A fault occurred during acceleration Press the STOP RST key 5 nOn is displayed after the fault condition is cleared More than one fault occur at the same time Drive group Over current Over voltage Motor overheat Maximum three faults...

Page 42: ...oved is 3 Press the Left key once 4 03 is displayed and 0 is active Increase the value to 9 by pressing the Up key 5 The parameter number to be moved is 93 Press the ENT key 6 The present setting is H93 of Function group 2 Press the ENT key 7 The setting value is 0 Press the Up key once 8 Press the ENT key Press it again when the number is blinking then the parameter initialization is active 9 The...

Page 43: ...the Left key three times 4 00 00 is displayed and the leftmost 0 is lit Press the Up key once 5 10 00 is displayed and then press the ENT key 10 00 is blinking Press the ENT key again 6 Run frequency is set to 10 00 Hz when 10 00 stops blinking Turn OFF ON the switch between P1 FX terminal and CM terminal on the connection diagram below 7 RUN operating lamp on the inverter keypad is blinking with ...

Page 44: ... setting method is changed into terminal AIN V setting frequency Press the Down key four times to move to frequency display status V1 voltage is adjusted so that output frequency is 10 00 Hz 7 Turn off ON the switch between P1 FX and CM terminals RUN operating lamp on the inverter keypad begins to blink with FWD Forward Run lamp lit and accelerating frequency displayed on the keypad Run frequency ...

Page 45: ... setting is 0 frequency setting via keypad Press the Up key three times 9 Press the ENT key after 3 is displayed Terminal AIN V1 Press the ENT key over again when 3 is blinking 10 Freq is displayed frequency setting method is made via Terminal AIN V1 Press the Down key four times to move the frequency display status V1 voltage is adjusted so that output frequency is 10 00 Hz 11 Press Run key on th...

Page 46: ...ec During Multi Accel Decel operation this parameter serves as Accel Decel time 0 20 0 O 7 12 dEC 1102 Decel time 20 0 O 7 12 drv 1103 Drive Mode 0 3 0 RUN STOP via RUN STOP key on the keypad 1 X 7 8 1 Terminal operation FX motor forward run RX Motor reverse run 7 8 2 FX Run Stop enable RX reverse rotation select 7 9 3 RS 485 communication 7 9 Frq 1104 Frequency Setting Method 0 8 0 Digital Keypad...

Page 47: ...tep operation 0 00 O 7 7 CUr 1108 Output current A Displays the output current to the motor 9 1 rPM 1109 Motor RPM rPM Displays the number of Motor RPM 9 1 dCL 110A DC link voltage V Displays DC link voltage inside the inverter 9 1 vOL 110B User display select This parameter displays the item selected at H73 Monitoring item select vOL 9 2 vOL Output voltage POr Output power tOr Torque nOn 110C Fau...

Page 48: ...t to 22 Drive Group LED display Address for commu nication Parameter name Set range Description Factory defaults Adj during run Page Frq2 1 110F Frequency setting method 2 0 7 0 Digital Keypad setting 1 0 X 8 22 1 Keypad setting 2 2 Analog Panel Potentiometer V2 0 5 V 3 Terminal A set J1 to V 0 10 V 4 Terminal A1 set J1 TO 1 0 20 mA 5 Panel Potentiometer V2 Terminal A1 J1 to 1 setting 6 Panel pote...

Page 49: ...nals 1 5 I17 I22 is set to 22 2 It is indicated when H49 PID control selection is 1 Function group 1 LED display Address for comm Parameter name Range Description Factory defaults Adj During run Page F 0 1200 Jump code 0 72 Sets the parameter code number to jump 1 O 4 5 F 1 1201 Forward reverse run disable 0 2 0 Fwd and rev run enable 0 X 7 10 1 Forward run disable 2 Reverse run disable F 2 1202 A...

Page 50: ...nt of Motor rated current H33 50 X 8 2 F13 120D DC brake start time 0 0 60 0 sec DC voltage is applied to the motor for DC brake start time before motor accelerates 0 0 X 1 Only displayed when F4 DC brake stop is set to 1 Function group 1 LED display Address for comm Parameter name Range Description Factory defaults Adj During run Page F14 120E Time for magnetizing a motor 0 0 60 0 sec This parame...

Page 51: ...ameter sets high limit of the run frequency It cannot be set above Max frequency F21 50 00 X F26 121A Frequency Low limit 0 00 400 00 Hz This parameter sets low limit of the run frequency It cannot be set above Frequency high limit F25 and below Start frequency F23 0 50 X 1 If H40 is set to 3 sensorless vector Max frequency is settable up to 120Hz 2 Only displayed when F24 Frequency high low limit...

Page 52: ... set to 2 user V F It cannot be set above F21 Max frequency The value of voltage is set in percent of motor rated voltage The values of lower numbered parameters cannot be set above those of higher numbered 12 50 Ｘ 7 18 F32 1220 User V F voltage 1 0 100 25 Ｘ F33 1221 User V F frequency 2 0 00 400 00 Hz 25 00 Ｘ F34 1222 User V F voltage 2 0 100 50 Ｘ F35 1223 User V F frequency 3 0 00 400 00 Hz 37 5...

Page 53: ...r sets max current capable of flowing to the motor continuously for 1 minute The set value is the percentage of Motor rated current H33 It cannot be set below Electronic thermal level for continuous F52 150 0 10 1 F52 1234 Electronic thermal level for continuous 50 150 This parameter sets the amount of current to keep the motor running continuously It cannot be set higher than Electronic thermal l...

Page 54: ...rns off the inverter output when motor is overloaded 1 0 10 3 F57 1239 Overload trip level 30 200 This parameter sets the amount of overload current The value is the percentage of Motor rated current H33 180 0 F58 123A Overload trip time 0 0 60 0 Sec This parameter turns off the inverter output when the F57 Overload trip level of current flows to the motor for Overload trip time F58 60 0 0 F59 123...

Page 55: ...s parameter decides whether to save the specified frequency during up down operation When 1 is selected the up down frequency is saved in F64 0 X 8 4 F642 1240 Save up down frequency If Save up down frequency is selected at F63 this parameter saves the frequency before the inverter stops or decelerated 0 00 X 8 4 F65 1241 Up down Mode select 0 2 We can select up down mode among three thing 0 X 8 5...

Page 56: ...e of draw 0 0 O 8 27 F722 1248 ND HD selection 0 1 0 HD CT heavy load 1 ND VT light load 0 X 8 22 F731 1249 200V DB start voltage 300 400 V Set DB start voltage of 200V class inverter 390 0 8 32 F741 124A 400V DB start voltage 600 800 V Set DB start voltage of 400V class inverter 780 0 8 32 1 200V inverter displays F73 400V inverter displays F74 2 only HD selection for single phase 200V inverter F...

Page 57: ...e machine 0 X 7 22 H111 130B Skip frequency low limit 1 0 10 400 00 sec Run frequency cannot be set within the range of H11 thru H16 The frequency values of the low numbered parameters cannot be set above those of the high numbered ones Settable within the range of F21 and F23 10 00 X H12 130C Skip frequency high limit 1 15 00 X H13 130D Skip frequency low limit 2 20 00 X H14 130E Skip frequency h...

Page 58: ...phase selection Bit1 inverter input lack phase selection 3 O 10 5 H20 1314 Power On Start select 0 1 This parameter is activated when drv is set to 1 or 2 Run Stop via Control terminal Motor starts acceleration after AC power is applied while FX or RX terminal is ON 0 O 7 10 H21 1315 Restart after fault reset selection 0 1 This parameter is activated when drv is set to 1 or 2 Run Stop via Control ...

Page 59: ...t 0 15 This parameter is active to prevent any possible fault when the inverter outputs its voltage to the running motor 0 X 8 17 Power On start Restart after instant power failure Operation after fault Norm al accel bit 3 bit 2 bit 1 bit 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 H22 Normal acceleration has first priority It has no relation with others In acceleration speed tracking works ...

Page 60: ...ult occurs Auto Restart is deactivated if the fault outnumbers the restart tries This function is active when drv is set to 1 or 2 Run Stop via control terminal Deactivated during active protection function OHT LVT EXT HWT etc 0 O 8 19 H27 131B Auto restart time 0 60 sec This parameter sets the time between restart tries 1 0 O 8 19 H30 131E Motor type select 0 1 11 0 0 1 0 1kW 0 751 X 8 15 11 0 11...

Page 61: ...an 10 times H39 1327 Carrier frequency 1 0 15 0 kHz This parameter affects the audible sound of the motor noise emission from the inverter inverter temp and leakage current If the set value is higher the inverter sound is quieter but the noise from the inverter and leakage current will become greater 5 01 O 8 20 3 01 H40 1328 Control mode select 0 3 0 V F Control 0 X 7 17 1 Slip compensation contr...

Page 62: ...son to normal PWM mode 0 X 8 29 0 Normal PWM mode 1 2 phase PWM mode H49 1331 PID select 0 1 Selects whether using PID control or not 0 X 8 10 H502 1332 PID F B select 0 2 0 Analog input terminal AI I 0 20 mA 0 X 8 10 1 Analog input terminal AI V 0 10 V 2 RS 485 communication H51 1333 P gain for PID 0 0 999 9 This parameter sets the gains for the PID controller 300 0 O H52 1334 Integral time for P...

Page 63: ...10V 3 I terminal setting 0 20mA 4 Setting as a RS 485 communication H58 133A PID control unit select 0 1 Selects a unit of the standard value or feedback amount 0 X 0 Frequency Hz 1 Percentage H61 133D Sleep delay time 0 0 2000 0 sec Sets a sleep delay time in PID drive 60 0 X 8 10 H62 133E Sleep frequency 0 00 400 00 Hz Sets a sleep frequency when executing a sleep function in PID control drive Y...

Page 64: ...nit 0 1 second 2 Settable unit 1 second H72 1348 Power on display 0 17 This parameter selects the parameter to be displayed on the keypad when the input power is first applied 0 O 9 2 0 Frequency command 1 Accel time 2 Decel time 3 Drive mode 4 Frequency mode 5 Multi Step frequency 1 6 Multi Step frequency 2 7 Multi Step frequency 3 8 Output current 9 Motor rpm 10 Inverter DC link voltage 11 User ...

Page 65: ... 134C DB resistor operating rate 0 30 Set the percent of DB resistor operating rate to be activated during one sequence of operation 10 O H771 134D Cooling fan control 0 1 0 Cooling fan is always on 0 O 8 29 1 Keeps ON when its temp is higher than inverter protection limit temp Activated only during operation when its temp is below that of inverter protection limit H78 134E Operating method select...

Page 66: ...z 60 00 X H84 1354 2nd motor V F pattern 0 2 0 X H85 1355 2nd motor forward Torque boost 0 0 15 0 5 0 X H86 1356 2nd motor reverse Torque boost 5 0 X H87 1357 2nd motor Stall prevention level 30 150 Multi function terminal 1 17 121 When one set is 12 No 2 motor selects switch on the terminal No 2 motor parameter activates 150 X 8 21 H88 1358 2nd motor Electronic thermal level for 1 min 50 200 150 ...

Page 67: ...ll parameter groups are initialized to factory default value 2 Only Drive group is initialized 3 Only Function group 1 is initialized 4 Only Function group 2 is initialized 5 Only I O group is initialized H94 135E Password register 0 FFFF Password for H95 Parameter lock Set as Hexa value 0 O 8 31 H95 135F Parameter lock 0 FFFF This parameter is able to lock or unlock parameters by typing password ...

Page 68: ...he maximum voltage of panel potentiometer V2 5 00 O I 5 1405 V2 input Max voltage corresponding frequency 0 00 400 00 Hz Sets the panel potentiometer V2 Max input voltage corresponding frequency 60 00 O I 6 1406 Filter time constant for V1 input 0 9999 Sets simulation input A1 terminal V input filtering wave time constant 10 O 7 2 I 7 1407 V1 input Min voltage 0 00 10 00 V Sets the minimum voltage...

Page 69: ... input current 4 00 O I13 140D 1 input Min current corresponding frequency 0 00 400 00 Hz Sets simulation input A1 terminal 1 Max input current corresponding frequency 0 00 O I14 140E I input Max current 0 00 20 00 mA Sets the Maximum current of I input 20 00 O I15 140F 1 input Max current corresponding frequency 0 00 400 00 Hz Sets simulation input A1 terminal 1 Max input current corresponding fr...

Page 70: ...unction input terminal P3 define 4 Jog operation command 2 O 8 3 5 Multi Step freq Low 7 7 I20 1414 Multi function input terminal P4 define 6 Multi Step freq Mid 3 O 7 Multi Step freq High I21 1415 Multi function input terminal P5 define 8 Multi Accel Decel Low 4 O 7 14 9 Multi Accel Decel Mid 1 0 Multi Accel Decel High 1 1 DC brake during stop 8 2 1 2 2nd motor select 8 21 1 3 Reserved 1 4 Reserv...

Page 71: ...utput group LED display Address for comm Parameter name Range Description Factory defaults Adj During run Page I25 1419 Input terminal status display BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 9 3 P5 P4 P3 P2 P1 I26 141A Output terminal status display BIT 0 9 3 3AC I27 141B Filtering time Constant for Multifunction Input terminal 1 15 If the value is set higher the responsiveness of the Input terminal is getti...

Page 72: ... 142D Multi Decel Time 6 8 0 O I46 142E Multi Accel time 7 9 0 O I47 142F Multi Decel time 7 9 0 O Input output group LED display Address for comm Parameter name Range Description Factory defaults Adj During run Page I50 1432 Analog output item select 0 3 Output item Output to 10 V 0 O 9 5 200V 400V 0 Output freq Max frequency 1 Output current 150 inverter rated current 2 Output voltage AC 282V AC...

Page 73: ...tor stall STALL 8 Over voltage trip Ovt 9 Low voltage trip Lvt 10 Inverter Overheat OHt 11 Command loss 12 During Run 9 10 13 During Stop 14 During constant run 9 11 15 During speed searching 16 Wait time for run signal input 17 Multi function relay select 18 Warning for cooling fan trip 19 Brake signal select I56 1438 Fault Relay output 0 7 When setting Number of auto restart try H26 When the tri...

Page 74: ...req command is given via AI terminal or RS485 0 O 10 7 0 Continuous operation at the frequency before its command is lost 1 Free Run stop Output cut off 2 Decel to stop I63 143F Wait time after loss of frequency command 0 10 120 0 sec This is the time inverter determines whether there is the input frequency command or not If there is no frequency command input during this time inverter starts oper...

Page 75: ...one Read command 5 0 11 6 I67 1443 Read address register 2 6 I68 1444 Read address register 3 7 I69 1445 Read address register 4 8 I70 1446 Read address register 5 9 I71 1447 Read address register 6 10 I72 1448 Read address register 7 11 I73 1449 Read address register 8 12 I74 144A Write address register 1 0 42239 The user can register up to 8 discontinuous addresses and write them all with one Wr...

Page 76: ...register 8 8 I821 1452 Brake open current 0 0 180 0 Sets current level to open the brake It is set according to H33 s motor rated current size 50 0 O 8 26 I83 1453 Brake open delay time 0 00 10 00 sec Sets Brake open delay time 1 00 X I84 1454 Brake open FX frequency 0 00 400 00 Hz Sets FX frequency to open the brake 1 00 X I85 1455 Brake open RX frequency 0 00 400 00 Hz Sets RX frequency to open ...

Page 77: ...Chapter 6 Control Block Diagram 6 1 Cx2000 AC Drive 6 Control Block Diagram F re q u e n cy S e ttin g D riv e m o d e A cc e l D e c e l V F C o n tro l P W M M o to r ...

Page 78: ... y JO G F re q u e n c y 2 n d R e fe re n c e F re q S e le ct M u lti ste p S e le c t 1 st R e fe re n c e F re q u e n c y M u lti fu n ctio n In p u t I O G ro u p I O G ro u p I O G ro u p M u lti fu n ctio n In p u t M u lti fu n ctio n In p u t 1 J O G S e le c t 2 J O G _ F X S e le c t 3 J O G _ R X S e le ct F in a l R e fe re n c e F re q I1 7 I2 1 I1 7 I2 1 I1 7 I2 1 ...

Page 79: ...G ro u p F rq 0 1 2 3 4 5 6 7 K e yp a d S e tting 2 V 2 0 5 V V 1 0 1 0 V I 0 20 m A V 2 I V 2 V 1 1 2 3 4 5 6 7 K e yp a d S e tting 1 0 C o m m un ica tion 8 U p D o w n O p era tio n 8 1 st R e fe re n ce F re q 2 n d R e fe re n ce F re q C o m m un ica tion V 1 0 10 V V 2 0 5 V I 0 2 0 m A K e yp a d K e yp a d S e tting 2 V 2 0 5 V V 1 0 1 0 V I 0 20 m A V 2 I V 2 V 1 1 2 3 4 5 6 7 K e yp a...

Page 80: ... ro up I1 7 I2 4 F orw ard R e ve rse C om m a nd S e le ct I O G ro up I1 7 I2 1 3 W ire O pe ra tio n Func G ro up 1 F 1 F orw a rd R e ve rse R un D isa b le D rive G ro up d rv D rive C o m m a n d S e le ct K e yp a d 1 2 F W D D isa b le R E V D isa b le F W D R E V R u n D rive C o m m a n d 0 1 1 7 0 1 2 3 C o m m u n icatio n 0 3 0 1 2 ...

Page 81: ... ra ke vo lta g e tim e D w e ll fre q tim e V F p a tte rn 0 1 2 S q u a re U se r V F V o lta g e F re q T o rq u e b o o s t S e le c t T o rq u e b o o s t va lu e 0 1 A u to m a tic M a n u a l L in e a r U s e r V F O u tp u t vo lta g e a d ju s tm e n t B a s e S ta rt fre q P W M O p e ra tio n S to p F re q u e n cy s e ttin g F U g ro u p 1 F 8 F 1 1 F U g ro u p 1 F 4 F U g ro u p 1 F ...

Page 82: ...en remote keypad is connected keypad keys on the body are deactivated but controlled by the button on the remote keypad Keypad frequency setting 2 Group Code Item Set value Range Initial Unit Drive group 0 00 Target frequency 0 00 400 00 0 00 Hz Frq Frequency setting mode 1 0 8 0 Set Frq code of Drive group to 1 When the operating frequencies are set in the frequency command code of Drive group pr...

Page 83: ...quency value set in the target frequency 0 00 of Drive group Terminal AI setting frequency dial J1 to V terminal input 0 10 V Group Code Item Set value Range Initial Unit Drive group 0 00 Target frequency 0 00 400 00 0 00 Hz Frq Frequency setting mode 3 0 8 0 I O group I 6 Filter time constant for V1 input 0 9999 10 I 7 V1 input Min voltage 0 00 10 00 0 00 V I 8 Corresponding frequency for V1 inpu...

Page 84: ...nit Drive group 0 00 Target frequency 0 00 400 00 0 00 Hz Frq Frequency setting mode 4 0 8 0 I O group I11 Filter time constant for I input 0 9999 10 I12 I input minimum current 0 00 20 00 4 00 mA I13 Corresponding frequency of I input minimum current 0 00 400 00 0 00 Hz I14 I input maximum current 0 00 20 00 20 00 mA I15 Corresponding frequency of I input maximum current 0 00 400 00 60 00 Hz Set ...

Page 85: ... the accuracy of Main Aux speed is set differently Follow the setting below when Main speed is given via 0 20mA with Aux speed via keypad potentiometer 0 5V When override function is used select the Main Aux speed according to loads used Group Code Item Set Value Unit I O group I 2 V2 input Min voltage 0 00 V I 3 Corresponding frequency of V2 input Min voltage 0 00 Hz I 4 V2 input Max voltage 5 00...

Page 86: ...20mA dial J1 to terminal I Frequency setting via RS 485 communication Group Code Item Set value Range Initial Unit Drive group 0 00 Target frequency 0 00 400 00 0 00 Hz Frq Mode of frequency setting 7 0 8 0 Set Frq code of Drive group to 7 Relevant parameters I 59 I 60 I 61 Refer to Chapter 11 Communication Function Frequency setting via digital potentiometer up down Group Code Item Set value Rang...

Page 87: ... I17 Multi function input terminal P1 function selection 0 27 0 I21 Multi function input terminal P5 function selection 23 7 It is available when Freq code setting is 2 7 Select one terminal to use for Analog frequency hold command among Multi function input terminal P1 P5 When P5 terminal is selected the following action Frequency P5 Operation Com m and Set freq ...

Page 88: ...i function input terminal P5 function selection 7 4 I30 Multi step frequency 4 0 00 400 00 0 00 Hz I31 Multi step frequency 5 0 00 I32 Multi step frequency 6 0 00 I33 Multi step frequency 7 0 00 Select a terminal to give Multi step frequency setting among P1 P5 terminals If terminals P3 P5 are selected set I19 I21 of I O group to 5 7 respectively Multi step frequency 0 is set by frequency setting ...

Page 89: ...is available at drC Selection of motor rotation direction when operating command is issued via keypad drC Operating direction of motor F Forward r Reverse Operating command 1 via FX RX terminals of inverter Group Code Item Setting Range Initial Unit Drive group drv Drive mode 1 0 3 1 I O group I17 Multi function input terminal P1 function selection 0 0 27 0 I18 Multi function input terminal P2 fun...

Page 90: ... I17 and I18 in I O group are set to 0 and 1 respectively FX Operating command setting Motor runs in forward direction when RX terminal P2 is OFF RX Direction of motor rotation select Motor runs in reverse direction when RX terminal P2 is ON Communication operation Group Code Item Set value Range Initial Unit Drive group drv Drive mode 3 0 3 1 I O group I59 Communication protocol select 0 1 0 I60 ...

Page 91: ...Start select Group Code Item Set value Range Initial Unit Drive group drv Drive mode 1 2 0 3 1 Function group 2 H20 Power On Start select 1 0 1 0 H20 is set to 1 Setting drv to 1 or 2 Run via control terminal with FX or RX closed ON when input power is applied to inverter the motor starts acceleration When drv is set to 0 keyboard runs or 3 communication operation this parameter is inactive warnin...

Page 92: ...is set to terminal operation 1 or 2 with FX or RX ON the motor starts acceleration after the fault is reset This parameter is inactive when drv is set to 0 Run via keypad or 3 RS 485 Communication operation Warning When this function is used fault is reset via terminal or keypad the motor starts immediately Particular attentions shall be directed to this function due to potential hazard R un C om ...

Page 93: ...t relate with the operation frequency Desired Accel Decel time unit is settable at the H71 Frequency reference for Accel Decel H70 is set to 0 Max frequency if Max frequency F21 is set to 60Hz Accel Decel time 5 sec when run frequency is set to 30Hz time to reach 30Hz would be 2 5 sec Corresponding to load property when more precious Accel Decel time is desired the setting unit can be changed as f...

Page 94: ... is set at the ACC dEC If H70 in function group 2 is set to 1 target frequency Accel Decel time is the time that takes to reach a target freq from constant run freq Current operating freq As below the frequency reference for Accel Decel time H70 is set to 1 target frequency Accel time is set to 5 sec The below graph in Section A shows the change in operating frequency when target frequency is set ...

Page 95: ...on input terminal P4 function selection 9 3 I21 Multi function input terminal P5 function selection 10 4 I34 Multi step Accel time 1 0 0 6000 0 3 0 Sec I47 Multi step Decel time 7 9 0 Select terminals for Accel Decel time command signal from multi function input terminals P1 P5 If Accel Decel time is set via P3 P5 terminals I19 I21 codes are set to 8 9 10 Multi step Accel Decel time 0 is set at AC...

Page 96: ... operation This curve allows the motor to accelerate and decelerate smoothly And it is applied to application occasion such as lifting load or elevator Warning When S curve is used the actual Accel Decel time is longer than the value set by user O perating com m and Freq Accel tim e Decel tim e H17 sets the starting ratio between S curve and Linear in 1 2 of Accel Decel Ref Frequency for smooth Ac...

Page 97: ...Accel Decel Disable Group Code Item Set value Range Initial Unit I O group I17 Multi function input terminal P1 function selection 0 27 0 I21 Multi function input terminal P5 function selection 24 4 Select one terminal among Multi function input terminals P1 P5 to define Accel Decel disable If P5 is selected set I21 to 24 CAUTION If Target Frequency is lower than the Max Frequency the waveform wil...

Page 98: ... linear Volts frequency ratio from F23 Start frequency to F22 Base frequency Base Frequency Inverter outputs its rated voltage frequency Refer to the motor nameplate Data Start Frequency Inverter starts to output its voltage frequency Square V F pattern Group Code Item Set value Range Initial Unit Function group 1 F30 V F pattern 1 0 2 0 Set F30 to 1 square This pattern maintains squared volts her...

Page 99: ...than linear V F pattern it could result in torque shortage or motor overheating due to over energizing When User V F curve is active F28 Torque Boost in forward direction and F29 Torque Boost in reverse direction are deactivated Output voltage adjustment Group Code Item Set value Range Initial Unit Function group 1 F39 Output voltage adjustment 40 110 100 This function is used to adjust the output...

Page 100: ...ue to over energizing Automatic torque boost Group Code Item Set value Range Initial Unit Function group 1 F27 Torque boost selection 1 0 1 0 Function group 2 H34 No Load Motor Current 0 1 50 A H41 Auto turning 0 0 1 0 H42 Stator resistance Rs 0 56 Before the auto torque boost setting stator resistance H42 and no load current H34 of motor shall be set correctly Refer to page 8 15 Set F27 to 1 auto...

Page 101: ...Range Initial Unit Function group 1 F4 Stop mode selection 2 0 3 0 Set F4 to 2 Free run stop When operating command is turned OFF the inverter turn off the output frequency and voltage then the motor stops in the matter of mechanical inertia Group Code Item Set value Range Initial Unit Function group 1 F4 Stop mode selection 0 0 3 0 Set F4 to 0 Decel to stop Motor decelerates to 0 Hz and stops dur...

Page 102: ...tart Frequency Frequency lowest limit If a frequency is set lower than this 0 00 is automatically set Frequency limit using High Low frequency limit Group Code Item Set value Range Initial Unit Function group 1 F24 Frequency high low limit select 1 0 1 0 F25 Frequency high limit 0 00 400 00 50 00 Hz F26 Frequency low limit 0 00 400 00 0 50 Hz Set F24 to 1 High low setting of operating frequency Th...

Page 103: ... of resonance frequency in the mechanical system However during acceleration or deceleration the motor can run through the skip frequency range but can t run at a certain speed When Accel is made if the frequency setting value setting via voltage current RS 485 communication or keypad is within the skip frequency range the frequency setting shall maintain at the skip frequency low limit it starts ...

Page 104: ...erter before DC brake F10 Set as per the rated current of motor based on H33 F11 The time set shall be the time for work of DC braking voltage Caution The over voltage or overlong time in DC brake will cause overheat or damage of motor Setting F10 or F11 to 0 will disable DC brake Waiting time of DC brake When load inertia is large or DC Brake Start Frequency is high over current trip may occur It...

Page 105: ...ill disable Starting DC brake t The inverter starts to accelerate after the time set in F13 ends DC brake at a stop Group Code Item Set Value Setting Range Initial Unit Function Group 1 F12 DC Brake start voltage 0 200 50 I O Group I19 Multi function input terminal P3 function selection 11 0 25 2 F12 Set on the basis of rated current of motor H33 One of the multi function input terminal P1 P5 may ...

Page 106: ... the range of F21 Max frequency and F23 Start frequency Jog operation overrides all other operations except Dwell operation Therefore if Jog frequency command is entered in the middle of Multi Step Up Down or 3 wire operation operation is executed at Jog frequency JOG FX RX Operation Group Code Item Set Value Setting Range Initial Unit Function Group 1 F20 Jog frequency 0 00 400 00 10 00 Hz I O Gr...

Page 107: ... I20 26 P4 Freq F20 30Hz P4 Run Command 8 3 UP Down operation UP Down storage function Group Code Item Set Value Setting Range Initial Unit Drive group Frq Frequency setting mode 8 0 8 0 I O group I17 Multi function input terminal P1 selection 0 0 27 0 I19 Multi function input terminal P3 selection 25 2 I20 Multi function input terminal P4 selection 15 3 I21 Multi function input terminal P5 select...

Page 108: ...pplied this signal is ignored Up down mode select Group Code Item Set Value Setting Range Initial Unit Drive group Frq Frequency setting mode 8 0 8 0 I O group I17 Multi function input terminal P1 selection 0 0 27 0 I20 Multi function input terminal P4 selection 15 3 I21 Multi function input terminal P5 selection 16 4 Function group 1 F65 Up down mode select 0 2 0 F66 Up Down step frequency 0 00 4...

Page 109: ...ted previous falling edge value is saved and if multi function input is not defined present frequency is not saved The accel decel time is same with when stetted as 0 When F65 is 2 It is increased as many as step frequency set as F66 at the rising edge of multifunction input set as UP and if it is activated for 3 second it operates like something set as 0 It is decreased as many as step frequency ...

Page 110: ...lect 0 0 27 0 I21 Multi function Input terminal P5 select 17 4 Select the terminal from P1 P5 for use as 3 Wire operation If P5 is selected set I21 to 17 3 Wire operation in the I O group Input signal is latched saved in 3 Wire operation Therefore inverter can be operated by Push button switch The bandwidth of pulse t should not be less than 50msec 8 5 Dwell operation Group Code Item Set Value Set...

Page 111: ...mula shown below 8 6 Slip compensation Group Code Item Set Value Setting Range Initial Unit Function group 2 H30 Motor type select 0 1 0 11 00 0 75 H31 Number of motor poles 2 12 4 H32 Rated slip frequency 0 00 10 00 2 33 Hz H33 Motor rated current 0 5 150 0 26 3 A H34 Motor No Load Current 0 1 50 0 11 0 A H36 Motor efficiency 50 100 87 H37 Load inertia rate 0 2 0 H40 Control mode select 1 0 3 0 S...

Page 112: ... running at rated frequency after the load is removed Enter 50 of the rated motor current when it is difficult to measure the motor no load current H36 Enter motor efficiency on the nameplate H37 Select load inertia based on motor inertia as shown below H37 Load inertia rate 0 Less than 10 times motor inertia 1 About 10 times motor inertia 2 Greater than 10 times motor inertia As the loads are hea...

Page 113: ...2 Sleep frequency 0 00 400 00 0 00 Hz H63 Wake up level 0 0 100 0 35 0 I O group I17 Multi function input terminal selection 21 0 27 Drive group rEF PID reference 0 00 400 00 0 0 100 0 0 00 0 0 Hz FbK PID feedback 0 00 400 00 0 0 100 0 0 00 0 0 Hz In order to control the amount of following water pressure and temperature do PID control to inverter output frequency Select H49 of function group 2 as...

Page 114: ...onse will be faster but setting too low may lead to controller oscillation H53 Set the output value to the variation of the error The error is detected by 0 01 sec If differential time is set to 0 01 sec and the percentage variation of error per 1 sec is 100 1 per 10msec is output H55 H56 It limits the output of the PID controller H57 selects PID Reference H58 PID Reference and PID feedback s unit...

Page 115: ...3 4 Keypad Setting 1 0 Communication H58 0 Frequency Operation Concept H58 1 Operation Concept 9 PID REF 4 PID FBK5 Frequency Conversion PID Output Frequency7使 PID Operation Change 6 0 1 2 3 4 PID OUT 8 I17 I24 Multi Function Input I O Group Note 3 Adds RS 485 communications to PID Feedback category Note 4 PID REF value can be changed and checked in the rEF of the DRV group Unit is Hz when H58 0 a...

Page 116: ...c Group 1 PID OUT1 3 I 0 20 mA KPD V2 0 5V V1 0 10 V I 0 20 mA Communication Communication 1st 2nd Frequency Selection Drive Group Frq 0 1 2 3 4 5 6 7 V1 0 10 V I 0 20 mA Keypad 1 2 V2 1 V1 V2 Communication H58 0 Frequency Operation Concept H58 1 Operation Concept Note 1 Speed command is the frequency FRQ 8 except Up Down set by FRQ FRQ2 and real output frequency is sum of speed command PID OUT1 a...

Page 117: ...leased 8 8 Auto tuning Group Code Item Set Value Setting Range Initial Unit Function group 2 H41 Auto turning 1 0 1 0 H42 Stator resistance Rs 0 56 H44 Leakage inductance Lσ 0 00 600 00 mH Automatic measuring of the motor parameters is provided The measured motor parameters in H41 can be used in Auto Torque Boost and sensorless Vector Control Press the STOP key for 5 seconds on the panel to start ...

Page 118: ... 9 Sensorless Vector Control Group Code Item Set Value Setting Range Initial Unit Function group 2 H40 Control mode select 3 0 3 0 H30 Motor type select 0 1 11 0 kW H32 Rated slip frequency 0 10 Hz H33 Motor rated current 0 5 150 A H34 Motor No Load Current 0 1 50 A H42 Stator resistance Rs 0 56 H44 Leakage inductance Lσ 0 600 0 mH Function Group 1 F14 Time for energizing a motor 0 0 60 0 0 5 Sec ...

Page 119: ... kW Current rating A No load Current A Rated slip freq Hz Stator Resistance Ω Leakage inductance mH 230 0 1 0 6 0 4 2 00 30 00 240 00 0 2 1 1 0 6 2 33 14 00 122 00 0 4 1 8 1 2 3 00 6 7 61 00 0 75 3 5 2 1 2 33 2 46 28 14 1 1 4 8 2 1 2 33 2 46 28 14 1 5 6 5 3 0 2 33 1 13 14 75 2 2 8 8 4 4 2 00 0 869 11 31 3 0 11 6 4 4 2 00 0 869 11 31 3 7 12 9 4 9 2 33 0 5 5 41 4 0 14 6 4 9 2 33 0 5 5 41 5 5 19 7 6 ...

Page 120: ...n light or no load is connected 8 11 Speed search Group Code Item Set Value Setting Range Initial Unit Function group 2 H22 Speed search select 0 15 0 H23 Current level 80 200 150 H24 Speed search P gain 0 9999 100 H25 Speed search I gain 200 I O Group I55 Multi function relay select 15 0 19 17 This is used to prevent possible fault from occurring if the inverter outputs the voltage during operati...

Page 121: ...peed search during Acceleration Bit 3 Bit 2 Bit 1 Bit 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 H23 Limits current during Speed search Set as the percent of H33 H24 H25 Speed search is activated via PI control Adjust P gain and I gain corresponding to the load characteristics I55 Signal of active Speed search is given to external sequence via Multi function relay output 3ABC EX Speed search during I...

Page 122: ...g Instant power failure specification is applied when input voltage to Inverter is 200 230V AC for 230V class or 380 480V AC for 415V class 8 12 Auto restart try Group Code Item Set Value Setting Range Initial Unit Function group 2 H26 Number of Auto Restart try 0 10 0 H27 Auto Restart time 0 0 60 0 1 0 sec This parameter H26 sets the number of times of auto restart It is used to prevent the syste...

Page 123: ...0 the inverter is used for HD H39 default value is 5kHz default value of 5 5 7 5KW is 3KHz max value is set to be 15kHz When F72 1 the inverter is used for ND H39 default value is 2kHz max value is set to be 5kHz H39 When setting carrier frequency high Motor sound reduced Inverter heat loss increased Inverter noise increased Inverter leakage current increased Run Command Constant Run 2 1 2 1 0 2 F...

Page 124: ...00 0 26 3 A I O Group I17 Multi function Input terminal P1Function select 0 27 0 I21 Multi function Input terminal P5Function select 12 4 Set the terminal among Multi function input terminals P1 P5 for second motor operation To define the terminal P5 as second motor operation set I21 to 12 in the I O group Used when an inverter operates 2 motors connected to two different types of the loads 2nd mo...

Page 125: ...Code Item Set Value Setting range Initial Unit Drive group drv Drive mode 1 0 3 1 Frq Frequency mode 1 0 8 0 drv2 Drive mode 2 0 3 1 Frq2 Frequency mode 2 0 7 0 I O group I17 21 Multi function input terminal P1 select 22 0 27 Drive mode 1 is used when the input set as 2nd source is not entered into multi input I17 I21 Drive mode 2 can input frequency setting and drive command as a 2nd setting valu...

Page 126: ...ode1 1 Keypad digital frequency mode2 2 Analog V2 potentiometer 0 5V 3 AI terminal J1 to V 0 10V 4 AI terminal J1 to I 0 20mA 5 V2 potentiometer AI terminal J1 to I set 6 V2 potentiometer AI terminal J1 to V set 7 Operation via communication RS 485 The following is example for switching of drv1 and drv2 Group Code Item Set Value Setting Range Initial Unit Drive group drv Drive mode 1 3 0 3 1 Frq F...

Page 127: ...ually as stop command because DRV is communication drive when P5 terminal input is OFF and changes into 1st Accelerate up to setting frequency for Drive 1 mode FX signal is ON Stop gradually under FX is OFF because DRV2 is 1 when P8 terminal input is ON and changes into 2nd Caution If you press ON while multi function input terminal P1 P5 is set to 2nd Source frequency command and drive command is...

Page 128: ...tion braking power Power Braking Adjusting the deceleration slope or accelerate again when inverter s DC voltage rises above a certain level by the electric motor s regeneration energy It can be used when short deceleration time without braking resistance is needed However be aware that the deceleration time can get longer than the set one and when it s used at a load that frequently decelerates b...

Page 129: ...trol pattern and order shall be confirmed before use After brake control starts prevent DC brake and frequency protection Brake open order Input motor operation command the inverter accelerates to forward reverse start frequency I84 I85 and the motor current reaches the start current I82 the output relay will release bake start signal maintain the start delay time of brake before acceleration Brak...

Page 130: ...un until low voltage occurs When H64 is set to 1 it controls the inverter output frequency and charges the energy occurred from the motor to the inverter DC H 65 KEB operation start level H 66 KEB operation stop level Selects starting and stopping point of the energy buffering operation Set the stop level H65 higher than the start level H 66 setting the low voltage defect level as standard H 37 Lo...

Page 131: ...2 V1 0 10V I 0 20mA 1 3 4 7 Keypad Setting 1 0 Communication 8 Multi Step Freq Multi Step Freq Select Digital Input Filter P1 P2 P3 P4 P5 I 27 I O Group I17 I21 5 6 7 I O Group St1 St3 I30 I33 Drive Group I O Group V1 Mode I Mode 1 2 NONE 0 Func Group 1 F70 DRAWMODE V1 0 10 V I 0 20 mA I O Group I 6 11 I O Group I3 I15 Center Freq Func Group 1 F71 K Fi nal R ef erence Frequency V2 Mode 3 V2 0 5 V ...

Page 132: ... to power off When it is set to 1 Cooling fan begins to operate when power is turned ON with operating command ON Cooling fan is stopped when operating command is turned Off with inverter output shut off Cooling fan keeps operating when heat sink temperature exceeds a certain limit regardless of operating command Make the inverter power off and cooling fan will stop when the voltage of main loop i...

Page 133: ...is set to 17 Fault output fault message is displayed 8 24 Input voltage set of inverter Group Code Item Set Value Setting Range Initial Unit Function Group 1 F67 Input voltage for 230V inverter 170 240 220 Function Group 1 F68 Input voltage for 415V inverter 320 480 380 F67 set input voltage of 230V level inverter F68 set input voltage of 415V level inverter The adjustment of input voltage will in...

Page 134: ...tory default password is 0 Enter the new password except 0 Follow the steps below when you register the password for the first time No Note Keypad display 1 Move to H94 code H94 2 Press Enter key twice 0 3 Register password Ex 123 123 4 123 will blink when Enter key is pressed 123 5 Press Enter key H94 Follow the table below to change the password Current PW 123 New PW 456 No Note Keypad display 1...

Page 135: ...ck means lock L 8 Press Enter key H95 Use password registered in H94 to unlock the parameters No Note Keypad Display 1 Move to H95 code H95 2 Press Enter key L 3 L lock means lock L 4 Press Enter key 0 5 Input the value registered in H94 e g 123 123 6 Press Enter key UL 7 UL Unlock means unlock UL 8 Press Enter key H95 8 26 Voltage for DB start Group Code Item Setting value Setting Range Initial U...

Page 136: ... rpm is the synchronous one imposed on the motor When H40 is set to 0 V F control the Inverter output frequency f is displayed in rPM using the formula below Motor slip is not considered In case that H49 code is 1 PID control Feed back amount is converted into frequency H31 Enter the number of rated motor poles on the nameplate H74 This parameter is used to change the motor speed display to mechan...

Page 137: ...or efficiency indicated on motor nameplate to H36 to display correct torque Power on display Group Code Name Setting Range Default Function group 2 H72 Power on display 0 Target frequency 0 1 Accel time ACC 2 Decel time DEC 3 Drive mode drv 4 Frequency mode Frq 5 Multi step frequency 1 St1 6 Multi step frequency 2 St2 7 Multi step frequency 3 St3 8 Output current CUr 9 Motor rpm rPM 10 Inverter DC...

Page 138: ... Default Unit I O group I25 Input terminals status display Input terminal status ON Off can be monitored in I25 The following is displayed when P1 P3 P4 are ON and P2 P5 are OFF Output terminal status monitoring Group Code Name Set Value Range Default Unit I O group I26 Output terminals status display Multi function relays status ON Off can be monitored in I26 The followings are displayed when Mul...

Page 139: ...perating status at the time of the fault Refer to Page 4 11 or 9 5 for keypad setting Fault types Frequency Current Accel Decel Information Fault during Accel Fault during Decel Fault during constant run Refer to Page 12 1 on fault types Fault History Monitoring Group Code Name Set Value Range Default Unit Function group 2 H 1 Fault history 1 H 5 Fault history 5 H 6 Reset fault history 0 1 0 H 1 H...

Page 140: ...ion the fault will be moved to other codes as follows 9 4 Analog Output Group Code Name Set Value Range Default Unit I O Group I50 Analog output item select 0 3 0 I51 Analog output level adjustment 10 200 100 Output item and the level from the AM terminal are selectable and adjustable I50 The selected item will be output to Analog output terminal AM I50 Analog output item select Item corresponding...

Page 141: ... STALL 8 Over voltage trip Ovt 9 Low voltage trip Lvt 10 Inverter overheat OHt 11 Command loss 12 During run 13 During stop 14 During constant run 15 During speed searching 16 Wait time for run signal input 17 Fault output 18 Cooling fan trip alarm 19 Brake control signal I56 Fault output select When setting Number of auto restart tries H26 When the trip other than low voltage trip occurs When the...

Page 142: ...on Bandwidth 2 Group Code Name Set Value Range Initial Unit I O Group I53 Detected Frequency Bandwidth 0 00 400 00 10 00 Hz Cannot be set above Max frequency F21 When setting I53 to 10 0 1 FDT 2 Activated when the preset frequency matches frequency detection level I52 and FDT 1 condition is met Active condition Preset frequency FDT level FDT 1 Group Code Name Set Value Range Default Unit I O Group...

Page 143: ...tion Absolute value FDT level run frequency FDT Bandwidth 2 Group Code Name Set Value Range Default Unit I O Group I52 Detected Frequency level 0 00 400 00 30 00 Hz I53 Detected Frequency Bandwidth 10 00 Cannot be set above Max frequency F21 When setting I52 and I53 to 30 0Hz and 10 0 Hz respectively 25Hz Freq MO 30Hz Run command Freq setting Freq MO Run command 25Hz 30Hz 35Hz 50Hz ...

Page 144: ...z I53 Detected Frequency Bandwidth 10 00 Cannot be set above Max frequency F21 When setting I52 and I53 to 30 00Hz and 10 00 Hz respectively 4 FDT 5 Activated contact contrast to FDT 4 Active condition Accel time Run Frequency FDT Level Decel time Run Frequency FDT Level FDT Bandwidth 2 Group Code Name Set Value Range Default Unit I O Group I52 Detected Frequency level 0 00 400 00 30 00 Hz I53 Det...

Page 145: ...oltage exceeded 400Vdc for 230V class and 820Vdc for 415V class 9 Low voltage trip Lvt Activated when low voltage trip occurs due to DC link voltage under 180Vdc for 230V class and 360Vdc for 415V class 10 Inverter heatsink overheat OHt Activated when the heatsink is overheated 11 Command loss Activated when Analog V1 I and RS485 communication commands are lost 12 During operation Activated when r...

Page 146: ...r active run command from external sequence 17 Fault output The parameter set in I56 is activated For example if setting I55 I56 to 17 and 2 respectively Multi function output relay will become active when trip other than Low voltage trip occurred 18 Cooling fan trip alarm Used to output alarm signal when H78 is set to 0 constant operation at cooling fan trip Refer to page 8 29 19 Brake signal It ...

Page 147: ...eset time in F51 F51 Enter the value of max current that is capable of flowing to the motor continuously for one minute It is set in percent of motor rated current The value cannot be set lower than F52 F52 Enter the amount of current for continuous operation Normally motor rated current is used It cannot be set greater than F51 F53 For a standard motor cooling fans are equipped however cooling ef...

Page 148: ...ction Group 1 F54 Overload warning level 30 150 150 F55 Overload warning time 0 0 30 0 10 0 Sec I O Group I55 Multi function relay function select 5 0 19 17 Set I55 multi function relay select to 5 Overload OL F54 Set the value as a percent of motor rated current F51 F52 60 ETH trip time sec Relay output F54 t OL warning time t t Current Output current ...

Page 149: ...ge Initial Unit Function group 1 F59 Stall prevention select 0 7 0 F60 Stall prevention level 30 200 150 I O Group I55 Multi function relay function select 7 0 19 17 During acceleration Motor starts deceleration when current exceeding the value set in F60 flows During constant run Motor decelerates when current exceeding the value set in F60 During deceleration Motor deceleration is stopped when i...

Page 150: ...evention active during Acceleration and constant run When stall prevention is executed during acceleration or deceleration Accel Decel time may take longer than the user setting time When stall prevention is activated during constant run t1 t2 executed in accordance with the value set in ACC Accel time and dEC Decel time During acceleration During constant run F60 t1 t2 Relay output DC voltage Out...

Page 151: ...ng Set H33 Motor rated current correctly If the actual motor rated current and the value of H33 are different output phase loss protection function could not be activated H19 Input Output phase loss protection select Input loss phase protection Output loss phase protection Bit 1 Bit 0 0 1 2 3 10 5 External trip signal Group Code Parameter Set Value Range Initial Unit I O Group I17 Multi function i...

Page 152: ...trip B is OFF Open inverter displays the fault and turns off its output 10 6 Inverter Overload Group Code Parameter Set Value Range Initial Unit I O group I55 Multi function relay function select 6 0 19 17 Inverter overload prevention function is activated when the current above inverter rated current according to the inverse time Multi function relay prevention is used to transmit the relay signa...

Page 153: ...value set in I2 I7 I12 is entered Ex 1 The inverter determines the freq reference is lost when DRV Frq is set to 3 Analog V input I 16 to 1 and analog input signal is less than half the value set in I 7 Ex 2 The inverter determines the freq reference is lost when DRV Frq is set to 5 V2 I I16 to 2 and V2 input signal is either below the value set in I2 or I input value is less than the I 12 value I...

Page 154: ...att rating Fire may result from resistor overheat When resistor having heat detection sensor is used sensor output can be used as external trip signal in multifunction input 1 ED is limited as the setting in H76 H76 set the resistor operating rate ED in one sequence of operation Continuous usage rate is Max 15 sec and usage signal is not issued over 15 seconds The inverter capacity varies with DB ...

Page 155: ...T_acc Acceleration time to reach a setting freq T_steady Time for constant speed operation at setting freq T_dec Time to decelerate to lower freq than that in constant speed or time to stop from freq in constant speed T_stop waiting time at a stop before operation is resumed 频 率 T_acc T_steady T_dec T_stop EX2 100 2 _ _ 1 _ _ _ 76 steady T acc T steady T dec T dec T H 频 率 T_acc T_steady1 T_dec T_s...

Page 156: ...tion can be achieved between inverters and computer inside RS 485 and the specifications and performances of converters may vary with manufacturers However the basic functions are the same refer to the converter manual for detailed specifications from manufacturers Note Before installation and operation this should be read thoroughly If not it can cause personal injury or damage to other equipment...

Page 157: ...t Time for Command Lost 1 0 sec I 59 Comm Prot 0 Modbus RTU 2 Computer and inverter connection The number of inverter to be connected is up to 16 pcs The specification of length of communication line is max 1200m To ensure stable communication li mit the length below 700m 11 4 Operation 11 4 operation 1 Operation steps Check whether the computer and the inverter are connected correctly Turn ON the...

Page 158: ...ers Slave Inverter responds to Read Write command from Master Code Description Function Code 0x03 Read Hold Register 0x04 Read Input Register 0x06 Preset Single Register 0x10 Preset Multiple Register Exception Code 0x01 ILLEGAL FUNCTION 0x02 ILLEGAL DATA ADDRESS 0x03 ILLEGAL DATA VALUE 0x06 SLAVE DEVICE BUSY User defin e 0x14 1 Write Disable Address 0x0004 value is 0 2 Read Only or Not Program dur...

Page 159: ... 220V 1 3P 220V 2 3P 440V 0x0003 Version R Ex 0x0010 Version 1 0 0x0004 Parameter Lock R W 0 Lock default 1 Unlock 0x0005 Freq Reference 0 01 Hz R W Starting freq Max freq 0x0006 Run Command B7 B6 drive type R B15 B14 B13 Reserved B12 B11 B10 B9 B8 Freq command 0 DRV 00 1 Reserved 2 Multi step speed 1 3 Multi step speed 2 4 Multi step speed 3 5 Multi step speed 4 6 Multi step speed 5 7 Multi step ...

Page 160: ...sed B8 Stopping B7 DC Braking B6 Speed arrived B5 Deceleration B4 Acceleration B3 Fault Trip B2 Reverse running B1 Forward running B0 Stop 0x000F Trip information A R B15 LVT B14 IOLT B13 POT B12 FAN B11 EEP B10 EXT B B9 Reserved B8 OLT B7 ETH B6 OHT B5 GFT B4 COL B3 EST B2 EXT A B1 OVT B0 OCT 0x0010 Input terminal status R B15 B5 Reserved B4 P5 B3 P4 B2 P3 B1 P2 B0 P1 0x0011 Output terminal statu...

Page 161: ...ovide electric power to the converter Are the connections between converter and c omputer correct Refer to converter manual Does the Drive start communication Start communication Is baud rate of inverter correctly set Set the correct value in accordance with 11 3 Installation 0x001C User version R Not used Address Parameter Scale Unit R W Allotment for Bits 0x001D Trip information B R B7 SAFB B6 S...

Page 162: ... N O P Q R S T U V W X Y Z 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A a b c d e f g h i J k l m n o p q r s t u v w x y z 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 0 1 2 3 4 5 6 7 8 9 space 30 31 32 33 34 35 36 37 38 39 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F _ BEL BS CAN CR DC1 DC2 DC3 DC4 DEL 3A 3B 3C 3D 3E 3F 40 5B 5...

Page 163: ......

Page 164: ... Inverter overload The inverter turns off its output when the output current of the inverter flows more than the rated level 150 for 1 minute Overload protection The inverter turns off its output if the output current of the inverter flows at 150 of the inverter rated current for more than the current limit time 1 min Overheating The inverter turns off its output if the heat sink overheats due to ...

Page 165: ... inverter determines the overheating of the motor If the motor is overloaded the inverter turns off the output The inverter cannot protect the motor when driving a motor having more than 4 poles or multi motors Input phase loss Inverter output is blocked when one of R S T is open or the electrolytic capacitor needs to be replaced ...

Page 166: ...in of time Cool fan abnormity It occurs when the cool fan of the inverter is abnormal The cool fan can run consecutively or stop refer to page 8 28 Emergency stop When the emergency stop EST terminal closes the inverter out put is turned off Caution In case that the operation command signal FX or RX of the terminal closes it can run again through shutoff of EST terminal Contract A Fault signal As ...

Page 167: ... inside the inverter Accel Decel time is too short compared to the GD2 of the load The inverter load is greater the rated value Inverter output is uploaded when the motor is free running Occurrence of output short circuit and ground fault echanical brake of the motor is operating too fast Increase the Accel Decel time Replace the inverter with greater capacity Resume operation after stopping the m...

Page 168: ...romagnetic contactor has a bad contact Bad output wiring Check the output electromagnetic contactor of the inverter Check the output wiring Cool fan abnormity There are some foreign substances i nhaled into the inverter intake The service time of the inverter exceeds the replacement period of the inverter Check the air inlet and outlet Replace the cool fan of the inverter Over voltage Accel Decel ...

Page 169: ...l input The terminal with the function c hoice 117 121 of multi function in put terminal set with 18 is closed The terminal with the function c hoice 117 121 of multi function in put terminal set with 19 is opened Remove the abnormity of the loop connected on the external fault terminal and check the causes for external faults Contract B Fault signal input Frequency command loss Inverter terminal ...

Page 170: ...ivated at 150 of the inverter rated current for 1 minute and greater While ND is used IOLT inverter overload is activated at 110 of the inverter rated current for 1 minute OLT OLT parameter F56 is set to 1 the output current exceeds the set value of F57 and lasts the setting time of F58 The inverter is not provided with Over speed Protection ...

Page 171: ... Inspect if screws and bolts may become loose or rust due to influences from external environment do retighten or replace them Check if there is any foreign substance in the inverter or radiator please remove it with an air blower if possible Check if there are such abnormities for example the cool fan runs abnormally the outside change a nd capacity of the electrolytic capacitor reduce and the el...

Page 172: ...1 22 1 42 1 97 Input and output specifications three phase input voltage 230V LTVF C2 BAA 0001 0002 0003 0006 0010 0012 0018 0030 0040 Applicable motor1 HD HP 1 8 1 4 1 2 1 2 3 5 7 5 10 kW 0 1 0 2 0 4 0 75 1 5 2 2 3 7 5 5 7 5 ND HP 1 4 1 2 1 1 5 3 4 5 4 10 15 kW 0 2 0 4 0 75 1 1 2 2 3 0 4 0 7 5 11 0 Output ratings Rated capacity kVA 2 HD 0 3 0 5 1 0 1 9 3 0 4 2 6 1 9 1 12 2 ND 0 4 0 7 1 3 2 4 3 8 ...

Page 173: ...t voltage and it can be programmable below input voltage LTVF C4 BAA 0002 0003 0005 0007 0010 0016 0023 Applicable motor1 HD HP 1 2 1 2 3 5 7 5 10 kW 0 4 0 75 1 5 2 2 3 7 5 5 7 5 ND HP 1 1 5 3 4 5 4 10 15 kW 0 75 1 1 2 2 3 0 4 0 7 5 11 0 Output ratings Rated capacity kVA 2 HD 1 0 1 9 3 0 4 2 6 1 9 1 12 2 ND 1 2 2 4 3 8 5 2 7 6 12 1 16 3 Rated current A 3 HD 1 25 2 5 4 0 5 5 8 0 12 0 16 0 ND 2 0 3 ...

Page 174: ...rminal Communication operation Frequency setting Analog type 0 10 V 0 20 mA Digital type Keypad Panel potentiometer Operational functions PID control Up Down operation 3 wiring operation Input P1 P5 Multi function terminals 5 pcs P1 P5 Optional NPN PNP refer to page 2 12 Functions Forward Reverse operation emergency stop fault reset Jog operation multi step frequency high mid and low multi step Ac...

Page 175: ...n Altitude Vibration Below 1000m 5 9 sec2 0 6G Atmospheric pressure 70 106 kPa Installation environment There shall not be corrosive air combustible gas oil mist dust and so on Note 2 under development 13 2 Rated current of inverter decreasing 13 2 1 Influence of carrier frequency on rated current decreasing Influence of carrier frequency on rated current decreasing 0 1 2 3 4 5 6 7 8 9 10 11 12 13...

Page 176: ...and options 13 5 Cx2000 AC Drive 13 2 2 Influence of input voltage on rated current decreasing Figure 13 3 current decreasing for 230V class inverter Input Voltage V Figure 13 4 current decreasing for 415V class inverter Input Voltage V ...

Page 177: ...king 150 braking Resistance value Power W Resistance value Power W 230V 0 1 1200 20 1000 20 0 2 700 25 500 35 0 4 400 50 300 100 0 75 200 100 150 150 1 5 100 200 60 300 2 2 60 300 50 400 3 7 40 500 33 600 5 5 30 700 20 800 7 5 20 1000 15 1200 415V 0 4 1800 50 1200 100 0 75 900 100 600 150 1 5 450 200 300 300 2 2 300 300 200 400 3 7 200 500 130 600 5 5 120 700 85 1000 7 5 90 1000 60 1200 The above ...

Page 178: ...play 7 segment LED Operation data and parameter information are displayed SET Lit during parameter setting Blinks when a fault occurs RUN Lit during operation REW Lit during reverse run FWD Lit during forward run Key RUN Run command STOP RESET STOP Stop command during operation RESET Reset command when fault occurs ...

Page 179: ... or move the cursor to the left when the parameters are written RIGHT Used to switch parameter groups or move the cursor to the right when the parameters are written ENT ENT Used to read write and keep the parameter values Knob Volume The keypad potentiometer V2 is used for frequency setting Specification mm Remote control option set includes one remote keypad one connection cable and one installa...

Page 180: ...Chapter 13 Product specifications and options 13 9 Cx2000 AC Drive 3 NO Description note remote keypad installation panel for remote keypad connection cable refer to the below table ...

Page 181: ...ion 60210147W0 Remote 2m SV Cx2000 connection cable 2m 60210145W0 Remote 3m SV Cx2000 connection cable 3m 60210146W0 Remote 5m SV Cx2000 connection cable 5m Attention It is strongly recommended to use the above remote cable to prevent malfunction due to voltage drop or noise installation 1 remove the front cover ...

Page 182: ... keypad by connection cable Attention Do not use the remote cable other than standard L T Otherwise malfunction may occur due to noise input or voltage drop in the keypad Check for disconnection of the communication cable and or poor cable connection if is displayed on the 7 segment display of the Remote keypad ...

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